Hinged self-sealing coupling



June 5, 1945. F. 'r. NEWELL HINGED SELF SEALING COUPLING Filed se i. gs, 1942 ATTORNEY Patented June 5, 1945 UNITED "STATES PATENT OFFiCE HINGED SELF-SEALING Fredeijick '1. Neweil', mo

rd, 'Pa.,- ignorto Dresser Industries, Inc., a corporation of Pennsylvania Application September 2c, 1942, Serial n6. 459,14:

cla m. (01. ass-12s) l shown in Fig. 5, thus holding the meeting ends My invention consists in the novel features hereinafterdescribed, reference. being had to the accompanying drawing, which represents one form in which I have contemplated embodying my invention, and the said invention is fully disclosed in the following description and claims.

My invention consists in a hinged self-sealing coupling for pipes in which a metal housing formed or two parts surround and encloses a gasket of rubber or rubber composition, channelshaped in cross section, and provided with inwardly extending lips engaging the meeting ends of the pipe members. The housing is provided with inwardly extending portions to engage grooves or shoulders on the pipes and prevent their endwise separation, and pressure tightness of the pip members together. Any suitable form of interlocking means y be employed for this purpose within the sco of my invention.

The hollow gasket, which is preferably formed of rubber or rubber composition, or like deformable elastic material, is constructed in one piece,

is obtained by the action of the pressure of the line contents which enters the annular cavity of the gasket and presses the lips thereof against the outer surfaces of the pipes and seals the joint.

One object of my invention is to so construct the coupling that it can be fully assembled as a single unit, before it is applied to the pipes so as to insure the proper positioning of the gasket around the pipe ends and the housing around the gasket, and thus avoid any danger of rupturing or injuring the gasket, and insuring the perfect sealing of the joint.

Referring to the drawing, 1

Fig. 1 is a top plan view of the coupling.

Fig. 2 is a transverse sectional view of the same.

Fig. 3 is a section on line 3-3 of Fig. 2.

Fig. 4 is a section on line 4-4 of Fig. 2.

Fig. 5 is a partial section through a pipe Joint formed with my coupling and illustrating the interlocking engagement of the housing.

In the drawing the housing, which is indicated at l, is formed in. two parts connected at one side, by a hinge 2, the opposite ends of the housing sections being provided with lugs 3 preferably made hollow tod ecrease the weight of the housing. One of the lugs 3 is provided with a bolt hole la to receive a coupling bolt 4 provided separated at one point, where its meeting endscome together. The gasket, indicated at 9, has its outer peripheral portions formed to fit the channel 6 0f the housing, the walls of the channel portions of the gasket being provided with inwardly extending annular pipe eng ing lips Ill adapted to be pressed sealingly against the outer surfaces of the pipes P and P by the pressure of the fluid passing through the pipes, which comun'icates with the interior. of the gasket.

The gasket 9 is permanently connected with the housing by the means illustrated in F18. 2. At each side of the meeting point. of the ends of the gasket each end thereof is provided with a boss ll molded in the channel portion of the the said ends are with a nut I. The other lug is preferably provided with a bolt receiving recess lb so that the bolt 4 maybe carried by the lower lug 3 and may be swung into position with respect to the recessed lug when the coupling is placed around the meeting pipe ends. The housing is provided with an annular channel I to accommodate and fit the gasket 9 and at each side of the channel 8 the housing is provided with means to interlock with the adjacent pipe section, in this instance with an annular inwardly extending flange 1 to engage a groove 8 in the pipe section, as

.20 formed by at that point,

gasket a short distance from the meeting point.

These bosses are closed at their inner sides and are provided with recesses l2, having openings,

I 3 extending to the outer surface of the gasket.

The openings II are of suflicient size to permit" nuts ll to begforced through them into the receases ii. The housing members are provided with apertures I! in registration with the apertures l3. and screws' it are inserted through'the aligned apertures of housing and gasket and threaded into the nuts, thus securing the gasket to the housing in proper relation therewith withoutdaffording any path for leakage of pressure gasket at itsmeeting ends,- provided with outwardly exwhich extend between the bosses recessed to accommodate thebolt at IS. The endsof the gasket are fwith inwardly extending ears or o In order to seal the which is provided with a buttress ears and insure that adequate pre- 2, the opposed inner faces of r the outer surfaces of the outwardly extending ears l1, l1, so that when the housing bolt is tightened initial pressure of the bolt is exerted on the inwardly extending ears l8, l8 through the buttresses 20, 20- to insure complete sealing of the inner portion or the split before the 1118s 3, 3 bind on the outwardly extending ears l1, l1 and force them into sealing engagement.

It will be understood that the parts of the coupling will be assembled ready ror use, thereby assuring that the parts will be and remain in proper relation for immediate application to the meeting ends of pipes. It is only necessary to place the coupling around the pipes and tighten the nut 5 and a perfectly sealed coupling 01 the pipes is insured. In practice, the circumferential length of the gasket is slightly less than that of the outside of the pipe, so thatwhen the couadjacent portions of said annular lips with an enclosed pipe,; by the internal fluid pressure in the channel 01 the gasket.

- extending ears adapted tosealingly engage each pling is bolted around the pipe the gasket is stretched around the pipe surface to provide an initial seal.

What I claim and desire Patent is:

to secure by Letters 1. m a pipe coupling oi the kind described, the

combination with a circular channeled housing formed of two sections and having abutting portions, and means for uniting said sections, of a channeled gasket enclosed within said housin and having annular pipe engaging sealing lips on opposite sides of said channel, said gasket being severed at one point and having its meeting ends aligned with meeting ends or said housing sections, the meeting ends or said gasket having outwardly extending ears adapted to sealingly engage each other and to lie between the meeting faces of said housing sections, and inwardly extending lips in radial alignment with said outwardly extending ears and adapted to sealingly engage each other, said gasket being provided interiorly with buttresses to hold said inwardly extending ears in sealing engagement.

2. ma pipe coupling oi the kind described, the combination with a circular channeled housing formed of two sections and having abutting portions, and meansfor uniting said sections, of a channeled gasket enclosed within said housing and having annular pipe engaging sealing lips on opposite sides of said channel, said gasket being severed at one point and having its meeting ends aligned with meeting ends of said housing sections, the meeting ends of said gasket having outwardly extending ears adapted to seallngly engage each other and to lie between the other and to lie between the clamping lugs of the housing, and means for permanently securing the ends of said gasket to the corresponding portions of the housing sections, the ends or said gasket being provided with inwardly extending lips in radial alignment with the said outwardly extending ears, for sealingly engaging each other, said gasket having buttresses adjacent to the inwardly extending ears for holding them in initial sealing engagement.

4. In a pipe coupling of the kind described, the combination with a circular channeled housing formed of two sections and having abutting portions provided with means for interlocking with the pipe sections to be united, and means for uniting said sections, of a channeled gasket enclosed within said housing and having annular.

pipe engaging sealing lips on opposite sides of said channel, said gasket being severed at one point and having its meeting ends aligned with meeting ends of said housing sections, the meeting ends of said gasket having inwardly extending lips adapted to sealingly engage-each other, and outwardly extending ears adapted to sealingly engage each other and to be clamped between the meeting faces of said housing sections to hold said inner lips in initial sealing contact.

5. In a pipe coupling of the kind described, the

combination with a circular channeled housing meeting faces of said housing sections, and inwardly extending lips in radial alignment with said outwardly extending ears and adapted to sealingly engage each other, said gasket being provided interiorly with buttresses to hold said.

inwardly extending lips in sealing engagement, and having recesses on opposite sides or said abutments to insure the sealing engagement of formed of two sections, hinged together at one side and provided at the other side with clamping lugs and a clamping bolt, of a circular channeled gasket'of elastic material adapted to engage the housing channel, and having an imperforate inner surface and opposed sealing pipe engaging lips on opposite edges or the channel, said gasket being severed atone point and having its meeting ends provided with inwardly extending lips for sealingly engaging each other, and means for permanently. securing the ends of said gasket to the corresponding portions 01 the housing sections to press saidinwardly exf tending lips together into initial sealing contact when the ends of the housing sections are drawn toward one another by said clamping bolt.

FREDERICK '1. NEWELL. 

